PETROPHYSICAL ANALYSIS OF AMIRPUR-01 WELL, UPPER INDUS BASIN PAKISTAN

Abstract

The aim of this study is to check the reservoir potential of Amirpur-01 well in Upper Indus Basin. The study concerned with reservoir potential evaluation using petrophysical approach. The approach involves identifying, marking, analyzing, and interpreting the reservoir zones from the well logs and by using different formulas. Several well logs were used such as sonic log, gamma ray log, density log, neutron log and resistivity logs. The petrophysical parameters such as Vsh, total porosity, water saturation, effective porosity, hydrocarbon saturation was accessed from wireline logs. The best possible reservoir in the well is Sakeser Limestone having thickness of 5m. Based on well log data, this reservoir is classified as excellent reservoirs owing to their high effective porosity and hydrocarbon saturation. The parameters determined includes volume of shale, porosity, resistivity of water, saturation of water, saturation of hydrocarbon and lithology identification. The total marked zones of interest are two in numbers and have 5m and 7m depth range. The Formations related to the petrophysically marked zone of interest are Sakesar Formation and Lockhart Formation. Petrophysical results shows good hydrocarbon potential in Sakesar Limestone with Saturation of hydrocarbons reaches 64%. Available data and interpretation of logs suggest that this zone of interest is good reservoir and possessed great potential of hydrocarbon accumulation and production.